abbr. phys.	Primary Excitation Energy Dispersive Spectrometry	PEEDS
		abbr. astr. lat.	Pegasus	Peg (Пегас)
		abbr. med.	PEG	percutaneous endoscopic gastrostomy
		abbr. geogr.	Pembrokeshire	Pemb.
		abbr.	International Association of Poets, Playwrights, Editors, Essayists and Novelists	PEN
		abbr. lat.	per annum	per an. (annually)
		abbr.	in each thousand	per mill
		abbr. lat.	per procurationem	per pro (by the agency of)
		abbr. astr. lat.	Perseus	Per (Персей)
		abbr. comp.	Price/Earning Ratio	P-E ratio
		abbr.	perfect	perf. (tense)
		abbr.	Performance Evaluation and Review Techniques	PERT
		abbr.	Program Function	PF
		abbr.	preferred	pfd
		abbr.	Page Format Number	PFN
		abbr. med.	PFT	pulmonary function test
		abbr.	Parity Generator	PG
		abbr.	PG	paying guest
		abbr.	PG	professional group
		abbr. comp.	Professional Graphic Adapter	PGA
		abbr. el.	Programmable Gain Amplifier	PGA
		abbr. sport.	Professional Golfers Association	PGA
		abbr.	Page Down	PgDn
		abbr.	Page Up	PgUp
		abbr.	Purple Heart	PH (medal)
		abbr.	Philosophiae Baccalaureus	Ph.B. (Bachelor of Philosophy)
		abbr.	Philosophiae Doctor	Ph.D. (Doctor of Philosophy)
		abbr.	Graduate in Pharmacy	Ph.G.
		abbr. astr. lat.	Phoenix	Phe (Феникс)
		abbr. chem.	Phenylalanine aminoacid	Phe
		abbr. geogr.	Philippines	Phil.
		abbr. med.	phosphorus	phos
		abbr. comp.	Personal Home Pages	PHP
		abbr. tech.	Personal Handy System	PHS
		abbr.	Pacing Indicator	PI
		abbr.	Priority Interrupt	PI
		abbr.	Programmable Interconnect Array	PIA
		abbr. astr. lat.	Pictor	Pic (the Painter, Живописец)
		abbr.	Position Independent Code	PIC
		abbr.	Programmable Interruption Controller	PIC
		abbr.	Proportional-Integrating-Derivative	PID (regulating algorithm)
		abbr. comp.	Protocal Independent Multicasting	PIM
		abbr.	Programmable Input/Output	PIO
		abbr.	Peripheral Interchange Program	PIP
		abbr.	Programming In Pictures	PIP
		abbr.	Parallel In, Parallel Out	PIPO
		abbr.	Parallel In, Serial Out	PISO
		abbr.	PIV	peak inverse voltage
		abbr.	Parallel Interactive Executive	PIX
		abbr. phys.	Proton-Induced X-Ray Emission	PIXE
		abbr. cryptogr.	Public Key Crypto Standards	PKCS
		abbr.	PKU	phenylketonuria
		abbr.	Programmed Logic Array	PLA
		abbr. el.	Plastic LCC	PLCC
		abbr.	Post Mortem Dump	PMD
		abbr.	Performance Monitor Enable Bit	PME
		abbr.	Phantasie Mutation Engine	PME
		abbr. el.	Plastic Micro Flat Package	PMFP
		abbr.	production per man-hour	pmh
		abbr. econ.	Purchasing Managers Index	PMI
		abbr.	PMMA	polymethylmethacrylate
		abbr. comp.	Processor-Memory-Switch	PMS
		abbr. comp.	Policy Management System	PMS
		abbr. med.	PMS	premenstrual syndrome
		abbr. tech.	Preventive Maintenance Service	PMS
		abbr. phys.	Photo Multiplier Tube	PMT
		abbr. med.	PND	paroxysmal nocturnal dyspnea
		abbr. med.	PNH	paroxysmal nocturnal hemoglobinuria
		abbr.	Program Region	PO
		abbr. astr.	Polar Orbiting Environmental Satellites	POES
		abbr.	Power On Hours	POH
		abbr. geogr.	Poland	Pol.
		abbr.	Program Region Length Register	POLR
		abbr. tech.	Peat-Oil Mixture	POM
		abbr.	Parking Orbit Nutation Damper	POND
		abbr. tech.	Prelaunch Operations Plan	POP
		abbr. tech.	Program Operating Plan	POP
		abbr.	Post Office Protocol	POP3 (version 3)
		abbr. geogr.	Portugal	Port.
		abbr.	Promoting Conference for OSI	POSI
		abbr. med.	postoperative	postop
		abbr. lat.	per pro	pp (for and on behalf of)
		abbr.	page, pages	pp.
		abbr. econ.	Producer Price Index	PPI
		abbr.	parts per thousand	ppm (million)
		abbr.	Peak-Program Metre	PPM
		abbr.	Planned Preventative Maintenance	PPM
		abbr.	Proton Precession Magnetometer	PPM
		abbr.	Project-Programmer Number	PPN
		abbr. lat.	Post PostScriptum	PPS
		abbr. phys.	Partial Pressure Transducer	PPT
		abbr. tech.	Pulsed Plasma Thruster	PPT
		abbr. comp.	Point-to-Point Tunnelling Protocol	PPTP
		abbr. el.	Plastic Quad Flat Pack	PQFP
		abbr. geogr.	Puerto Rico	PR
		abbr.	price	pr.
		abbr.	preferred shares	prefs
		abbr. med.	preoperative	preop
		abbr.	present	pres.
		abbr.	Program Request Key	PRK

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